WO2017007117A1

WO2017007117A1 - Direct current motor for vehicle

Info

Publication number: WO2017007117A1
Application number: PCT/KR2016/004047
Authority: WO
Inventors: 강성문
Original assignee: (주)타마스
Priority date: 2015-07-07
Filing date: 2016-04-19
Publication date: 2017-01-12
Also published as: KR101675229B1; US10886800B2; JP2018516063A; US20180166934A1

Abstract

The present invention relates to a direct current motor for a vehicle, the motor having a novel electromagnetic structure and exhibiting excellent driving efficiency. The direct current motor comprises: a cover assembly; a yoke assembly that has a housing coupled with the cover assembly and a plurality of excitation poles arranged within the housing; an armature assembly that includes an armature core having a plurality of pole teeth around which coils interacting with the excitation poles are wound and a commutator having, on the armature core, the same number of commutator films as the excitation poles; and a brush disposed inside the cover assembly and selectively making contact with the commutator as the armature assembly rotates, wherein the excitation poles are provided such that three N-poles and three S-poles are alternately arranged, and 13 pole teeth and 13 commutator films are radially formed with a predetermined angle therebetween.

Description

Automotive DC Motor

The present invention relates to a vehicle DC motor. More specifically, the present invention relates to a vehicle DC motor having excellent driving efficiency while having a new electromagnetic field structure.

In general, a DC motor has a configuration in which an armature is rotatably disposed inside a yoke in which a magnet is arranged on an inner circumferential surface thereof. The armature has a plurality of teeth extending radially from the axis of rotation, and a plurality of slots for the armature coil windings are formed in the axial direction between the extreme and other neighboring teeth.

A plurality of coils are wound around the slots at predetermined intervals, and each coil is electrically connected to a commutator thin film of a commutator installed on a rotating shaft spaced apart from the armature by a predetermined distance. Each commutator thin film is connected to a brush so as to be energized.

Thus, when a current is supplied from the brush to the commutator, an electric field is formed in each coil, and the rotational shaft equipped with the armature and the commutator rotates and drives the driving force by the interaction between the electric field generated and the magnet attached to the yoke. This will happen.

Such a DC motor can be used in an ABS (Anti-Lock Brake System) system used in a vehicle's braking system because of its wide and precise speed control.

In particular, in recent years, motors of various structures have been researched and developed for miniaturization of motors and maximization of driving efficiency according to the demand of the vehicle DC motor market.

As an example, the DC motor disclosed in Korean Patent No. 10-1200505 has a commutator coil wound around an armature core and has 20 commutator thin films, and the armature core has the same number of slots as the commutator thin film. In the conventional DC motor configured as described above, the number of commutator thin films is 20, which is a multiple of the number of magnet poles (four), and the core slot is interposed between the permanent magnets when the motor is driven, thereby adversely affecting the cogging torque. There is a falling problem.

In view of the above-described situation, the present inventors propose an improved vehicle DC motor having higher efficiency and reducing the size of the motor.

An object of the present invention is to provide a DC motor for a vehicle that maximizes the efficiency of the motor by applying a new winding pattern with the structural change of the brush.

Another object of the present invention is to provide a DC motor for a vehicle that has a miniaturization of the motor and high efficiency compared to the motor of the same size by reducing the thickness of the yoke assembly by forming the excitation pole to six poles.

Vehicle DC motor according to the present invention,

Cover assembly; A yoke assembly having a housing coupled to the cover assembly and a plurality of excitation poles disposed inside the housing; An armature assembly including an armature core having a plurality of extremes wound by coils interacting with the excitation pole, and commutators having an equal number of commutator thin films on the armature core corresponding to the excitation pole; And a brush disposed inside the cover assembly, the brush selectively contacting the commutator as the armature assembly rotates.

The excitation pole has three N poles and three S poles are alternately arranged, and the extreme and commutator thin films are formed in a radial shape with thirteen at an angle.

In the present invention, the brush is composed of a pair of the first brush and the second brush, the first brush and the second brush forms an angle of 180 ° with each other, based on the axis connecting the excitation poles facing each other 14 ° can be fixedly rotated.

In the present invention, the coil may be connected to the second commutator thin film starting from the first commutator thin film and winding adjacent first extreme value and the second extreme value at once.

In the present invention, the first commutator thin film is a commutator thin film positioned above the first extreme value in the left direction of the first extreme value, and the second commutator thin film is located above the second extreme value in the right direction of the second extreme value. Can be located.

According to the vehicle DC motor according to the present invention, an improved winding pattern is applied in implementing a six-pole motor, and a pair of brushes are disposed at 180 degrees so that the motor rotates normally with an angle of 14 ° from the center of the excitation pole. By miniaturizing the size of the motor, it is possible to maximize the output and efficiency.

1 is a perspective view of a motor according to an embodiment of the present invention.

2 is an exploded perspective view of the motor of FIG. 1.

3 is a plan view with the cover assembly removed from the motor of FIG.

4 is a view showing a coil wound around the armature assembly according to the present invention.

5 is a view showing a coil winding method according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the motor according to the present invention.

1 is a perspective view of a motor according to the present invention, Figure 2 is an exploded perspective view of the motor of Figure 1, Figure 3 is a plan view with the cover assembly removed from the motor of Figure 1, Figure 4 is an amateur according to the invention A diagram showing a coil wound around the assembly.

1 to 4, a motor according to an embodiment of the present invention includes a cover assembly 10, an armature assembly 20, and a yoke assembly 30.

The yoke assembly 30 includes a housing 31 coupled to the cover assembly 10 and a plurality of excitation poles 33 disposed inside the housing 31.

The housing 31 has a cylindrical shape with an open top, and a coupling groove 32 is formed at an upper end thereof. The coupling groove 32 is coupled to correspond to the protrusion 13 provided in the cover assembly 10.

The excitation pole 33 includes three pairs of six-pole magnets, that is, a first N pole P1, a first S pole P2, a second N pole P3, a second S pole P4, and a third N pole. It is composed of a pole (P5), the third S pole (P6), and is arranged sequentially while maintaining a predetermined interval along the circumference of the inner surface of the housing (31). As described above, the present invention can achieve the effect of reducing the thickness of the yoke as compared to the case of the conventional four-pole, as it is composed of six poles. For example, in the case of forming a 4-pole motor having a housing thickness of 2.0T with 6 poles, the thickness of the housing may be 1.6T to reduce the thickness by about 0.4T, which in turn leads to miniaturization of the motor. Furthermore, the manufacturing cost can be reduced.

The armature assembly 20 has an armature core 21 having a plurality of extremes 22 to which coils interacting with the plurality of excitation poles 33 are wound, and located above the armature core 21. Commutator 24 having the same number of commutator thin films 25 corresponding to extremes 22.

In the center of the armature core 21 and the commutator 24 is passed through the rotary shaft 27, when the motor is operated the armature core 21 and the commutator 24 rotates with the rotation shaft 27. In this case, a bearing 40 for rotatably supporting the rotation shaft 27 may be provided on the rotation shaft 27.

The armature core 21 includes a base 23 and extremes 22 extending radially from the base 23 as shown in FIG. 4. The extreme value 22 may be composed of a total of 13, and the second extreme value T2, the third extreme value T3, and the fourth extreme value T4 at regular intervals in a counterclockwise direction with respect to the first extreme value T1. ), The fifth extreme value (T5), the sixth extreme value (T6), the seventh extreme value (T7), the eighth extreme value (T8), the ninth extreme value (T9), the tenth extreme value (T10), and the eleventh extreme value (T11). , The twelfth extreme value T12 and the thirteenth extreme value T13 are formed.

A coil 60 is wound around each extreme 22, and when a current is applied to the coil 60, torque is generated through interaction with the excitation pole 33. A specific winding method in this regard will be described later with reference to FIG. 5.

Meanwhile, one slot is formed between two neighboring extremes 22 of the extremes 22. That is, a first slot S1 is formed between the first extreme value T1 and the second extreme value T2, and a second slot S2 is formed between the second extreme value T2 and the third extreme value T3. Is formed. Similarly, a third slot S3, a fourth slot S4, a fifth slot S5, a sixth slot S6, a seventh slot S7, and an eighth between the two neighboring extremes 22. Slots S8, ninth slots S9, tenth slots S10, eleventh slots S11, twelfth slots S12, and thirteenth slots S13 are formed, respectively.

The commutator 24 includes the commutator thin film 25 and the commutator body 26 and may be disposed on the armature core 21. The commutator thin films 25 may be configured in the same number, that is, 13 pieces corresponding to the extreme values 22. In detail, the second commutator thin film C2 and the third commutator may be spaced in the counterclockwise direction at the same time as the extreme value 22 based on the first commutator thin film C1 positioned above the first extreme value T1. Thin film C3, fourth commutator thin film C4, fifth commutator thin film C5, sixth commutator thin film C6, seventh commutator thin film C7, eighth commutator thin film C8, and ninth commutator thin film ( C9), the tenth commutator thin film C10, the eleventh commutator thin film C11, the twelfth commutator thin film C12, and the thirteenth commutator thin film C13 are formed.

The commutator thin films 25 are electrically insulated from each other, and one end of the commutator thin films 25 has a catching piece 25a on which the coil 60 is engaged.

In the above-described embodiment of the present invention, six excitation poles 33, thirteen extreme values 22, and thirteen commutator thin films 25 are illustrated, but the present invention is not limited thereto. 33), the number of extremes 22 and the commutator thin film 25 may vary.

The cover assembly 10 is located at the top of the motor to open and close the upper portion of the yoke assembly 30. To this end, a protruding piece 13 for engaging with the housing 31 of the yoke assembly may be formed at an edge of the cover assembly 10, and the protruding piece 13 corresponds to the coupling groove 32 of the housing. Are combined.

In addition, the cover assembly 10 may be formed with a bearing insertion hole 11 in which the bearing 40 is inserted in the center portion, the wire connecting pipe 12 through which the wire for receiving power from the outside is It may be provided.

Brush 50 is fixedly installed inside the cover assembly 10. The brush 50 selectively contacts the commutator 24 as the armature assembly 20 rotates, and current flows in the coil 60 through the commutator 24 connected to the wire and in contact with the commutator 24. To be able.

The brush 50 is composed of a pair of first brushes 51 and a second brush 52, the first brush 51 and the second brush 52 are arranged at an angle of 180 ° to each other. .

In particular, in the present invention, as shown in FIG. 3, the brush 50 is rotated 14 ° clockwise or counterclockwise about an axis connecting a pair of excitation poles facing each other (for example, P1 and P4). Can be fixed and installed, in which case the efficiency of the motor is maximized.

5 is a view showing a coil winding method of a motor according to the present invention. Referring to FIG. 5, a process in which the coil 60 is wound around the plurality of extreme values 22 and a process in which the coil 60 is connected to the commutator thin films 25 will be described in detail.

First, the coil 60 starts from the second commutator thin film C2 and surrounds the third extreme value T3 and the fourth extreme value T4 at a time, and is then connected to the sixth commutator thin film C6.

Specifically, the coil 60 coming from the second commutator thin film C2 enters the second slot S2 and passes through the third extreme value T3 and the fourth extreme value T4, and then falls into the fourth slot S4. Come out. Then, after passing through the upper portions of the third extreme value T3 and the fourth extreme value T4, the second extreme value is entered again toward the second slot S2 and exits to the fourth slot S4 as described above. After repeating as many times as the bow, the coil 60 is connected to the sixth commutator thin film C6. Here, the process of wrapping the two adjacent extremes of the coil 60 may be applied in the same way.

Next, the coil 60 passing through the sixth commutator thin film C6 surrounds the seventh extreme value T7 and the eighth extreme value T8 at once, and is then connected to the tenth commutator thin film C10.

Next, the coil 60 passing through the tenth commutator thin film C10 surrounds the eleventh extreme value T11 and the twelfth extreme value T12 at a time, and is then connected to the first commutator thin film C1.

That is, when winding the coil 60 in such a pattern, the commutator thin film 25 is the second commutator thin film C2, the sixth commutator thin film C6, the tenth commutator thin film C10, the first commutator thin film ( C1), fifth commutator thin film (C5), ninth commutator thin film (C9), thirteenth commutator thin film (C13), fourth commutator thin film (C4), eighth commutator thin film (C8), and twelfth commutator thin film (C12) The third commutator thin film C3, the seventh commutator thin film C7, and the eleventh commutator thin film C11 are connected to the coil 60 in this order.

At this time, the two adjacent extremes 22 wound around the coil 60 before the respective commutator thin films 25 are connected to the third and fourth extremes T3 and T4, the seventh extreme and the eighth extreme T7. , T8), eleventh extreme and twelfth extreme (T11, T12), second extreme and third extreme (T2, T3), sixth extreme and seventh extreme (T6, T7), tenth extreme and eleventh extreme (T10, T11), the first extreme value and the second extreme value (T1, T2), the fifth extreme value and the sixth extreme value (T5, T6), the ninth extreme value and tenth extreme value (T9, T10), thirteenth extreme value, and To be selected in order of the first extreme (T13, T1), the fourth extreme and the fifth extreme (T4, T5), the eighth extreme and the twelfth extreme (T8, T12), the twelfth extreme and the thirteenth extreme (T12, T13). Can be.

In other words, the n-th coil is started from the second commutator thin film (C _n) (60) are repeated to exiting to the k-th slot go toward the (S _k) the (k + 2) th slot (S _k ₊ ₂₎ The (m + 1) th extreme value (T _m ₊ ₁ ) and the (m + 2) th extreme value (T _m ₊ ₂ ) are wound together, and the coil 60 is then wound with the (n + 4) th commutator thin film ( C _{n + 4} ).

Here, n, k, and m are natural numbers having values of 1 to 13 depending on the number of commutator thin films 25, slots 28, and extreme values 22, respectively (k + 2) and (m + 1). , (m + 2) and (n + 4) are the remaining values divided by 13 from the above values when 13 is exceeded. On the other hand, in the embodiment according to the present invention, as the commutator thin film and the extreme value are located up and down corresponding to each other, the n, k and m may have the same value.

In Figure 4 it can be seen that the coil is wound around the armature assembly according to the winding method, in the present invention, by applying the structure of the above-described winding method and the brush, it is possible to maximize the efficiency in the six-pole motor.

The detailed description of the present invention described above is merely described by way of example for the purpose of understanding the present invention, and it should be understood that it is not intended to define the scope of the present invention. The scope of the invention is defined by the claims appended hereto, and it should be understood that all simple modifications and changes within this scope are within the scope of the invention.

Claims

Cover assembly;

A yoke assembly having a housing coupled to the cover assembly and a plurality of excitation poles disposed inside the housing;

An armature assembly including an armature core having a plurality of extremes to which coils interacting with the excitation pole are wound, and commutators positioned on the armature core and having the same number of commutator thin films corresponding to the extremes; And

A brush disposed inside the cover assembly and selectively contacting the commutator as the armature assembly rotates;

It is made, including

The excitation pole has three N poles and three S poles are alternately arranged, and the extreme value and the commutator thin film is a vehicle DC motor, characterized in that each of the 13 is formed in a radial at a constant angle.
The method of claim 1,

The brush is composed of a pair of first brushes and a second brush, the first brush and the second brush forms an angle of 180 ° with each other, 14 ° degree relative to the axis connecting the excitation poles facing each other Vehicle DC motor, characterized in that the fixed installation in the rotated state.
The method of claim 1,

And the coil is connected to the second commutator thin film after winding the first and second extreme values adjacent to each other starting from the first commutator thin film.
The method of claim 3,

The first commutator thin film is a commutator thin film positioned above the first extreme in the left direction of the first extreme value, and the second commutator thin film is located above the second extreme in the right direction of the second extreme value. Vehicle DC motor, characterized in that the.
In the coil winding method of a DC motor for a vehicle comprising an armature assembly having a commutator thin film, an extreme and a slot,

(a) passing the coil through an nth commutator thin film;

(b) repeatedly winding the coil toward the k th slot and exiting the (k + 2) th slot to wind the (m + 1) th and (m + 2) th extremes together; And

(c) connecting the coil to a (n + 4) th commutator thin film;

Including;

N, k and m are natural numbers of 1 to 13, and the values of (k + 2), (m + 1), (m + 2) and (n + 4) are greater than 13 when The coil winding method of the DC motor for vehicles, characterized in that the remaining value divided by 13.